Are biosurfactant and chelating agent mixtures

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Are biosurfactant and chelating agent mixtures
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Are biosurfactant and chelating agent mixtures good additives for electro-kinetic remediation of multi-contaminated sediments? Y. Tian1,2, F. Portet-Koltalo1, A. Benamar2, C. Boulangé-Lecomte3 Laboratory COBRA UMR CNRS 6014, University of

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Are biosurfactant and chelating agent mixtures good additives for electro-kinetic remediation of multi-contaminated sediments? Y. Tian1,2, F. Portet-Koltalo1, A. Benamar2, C. Boulangé-Lecomte3
Laboratory COBRA UMR CNRS 6014, University of Rouen, 55 rue Saint Germain, 27000 Evreux, France. Yue.tian@etu.univ-lehavre.fr
Laboratory LOMC UMR CNRS 6294, University of Le Havre, 53 rue Prony, 76058 le Havre, France. 3 Laboratory SEBIO UMR I02, University of Le Havre, 25 rue Philippe Lebon, 76058 Le Havre, France Harbor dredged sediments Rich in clay, carbonates (pHsediment=8.4) and organic matter (OM6%)

High retentive power for metals (clays) and organic contaminants (OM)
Buffer effect (carbonates) : Reduce metal mobility Heavy metals extracted from Tancarville sediment 2 dominant processes :
Electro migration
Electro osmose Objective:
Desorb, solubilize the pollutants in sediment pores and transport them toward the electrodes by applying an electric field (1 V/cm) Advantages:
For low permeability sediment
Multi-decontamination
Fast
Site implementation
Difficulties: suitable efficient additives
Maintain pH: acid
Solubilize lipophilic compounds
Transport heavy metals
Environmentally friendly treatment Tests with a chelating agent and a surfactant Sediment sample<br>